KR102046361B1 - Solvent-free type ink vehicle composition for reducing smell, method for manufacturing the same, and ink composition - Google Patents

Abstract

The disclosed vehicle composition for reducing odorless solvent ink includes rosin-modified phenolic resin 30 to 60 wt%, soybean oil 15 to 40 wt%, fatty acid ester 20 to 40 wt%, gelling agent 0.1 to 2 wt% and lipophilic antioxidant 0.1 to 5 weight percent. The vehicle composition can be used in environmentally friendly inks by reducing odor of the ink.

Description

Vehicle composition for solvent-free ink for odor reduction, manufacturing method and ink composition therefor {SOLVENT-FREE TYPE INK VEHICLE COMPOSITION FOR REDUCING SMELL, METHOD FOR MANUFACTURING THE SAME, AND INK COMPOSITION}

The present invention relates to an ink, and more particularly, to a vehicle composition for odor reducing solvent-free ink that can be used in an eco-friendly ink that does not contain a hydrocarbon solvent, a manufacturing method thereof, and an ink composition.

Generally, the ink used by printing of various books, packaging materials, etc. may contain resin, a solvent, an oil, and an additive. As the solvent, a hydrocarbon-based solvent has been used, and recently, an increase in the use of vegetable oil for eco-friendly design is increasing.

However, in the case of vegetable oil, odor (odor) often occurs due to rancidity, etc., which causes a problem of deterioration of product quality due to consumer complaints or migration.

In addition, in the case of inks used for food packaging and the like, regulations on environmental friendliness are increasing. For example, there is an increasing demand for reduction or replacement of hydroquinone used for increasing ink storage, cobalt-based desiccant or manganese-based desiccant added for oxidative drying.

1.Registered Patent Publication No. 10-1071763 (2011.10.11.)
2. Korean Patent Publication No. 10-2013-0106963 (2013.10.01.)

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle composition for a solvent-free ink for odor reduction, focusing on such needs.

Another object of the present invention is to provide a method for manufacturing the vehicle for an environmentally friendly ink.

Another object of the present invention is to provide an environmentally friendly ink composition.

In order to achieve the above object, the vehicle composition according to an embodiment of the present invention, rosin modified phenolic resin 30 to 60% by weight, soybean oil 15 to 40% by weight, fatty acid ester 20 to 40% by weight, gelling agent 0.1 to 2% by weight And 0.1-5% by weight of lipophilic antioxidant.

According to one embodiment, the rosin-modified phenolic resin has a weight average molecular weight range of 80,000 to 140,000, a softening point of 150 ~ 185 ℃ range, acid value of 15 ~ 20mgKOH / g range, Gardner viscosity of S ~ V range , n-heptane dilution is in the range of 10-16.

According to one embodiment, the fatty acid ester comprises a fatty acid methyl ester.

According to one embodiment, the gelling agent comprises at least one selected from the group consisting of chelate alkoxides, alkoxides and aluminum chelates.

According to one embodiment, the lipophilic antioxidant comprises butylated hydroxy toluene.

Method for producing a vehicle composition according to an embodiment of the present invention, rosin-modified phenolic resin 30 to 60% by weight, soybean oil 8 to 12% by weight and fatty acid methyl ester 8 to 12% by weight and mixed at 180 to 200 ℃ Step, adding 8 to 12% by weight of soybean oil and 14 to 18% by weight of fatty acid methyl ester to the heated mixture, cooling the mixture to 145 to 155 ℃, the temperature of the cooled mixture to 155 to 165 ℃ Adding 0.1 to 2% by weight of a gelling agent, adding 2 to 5% by weight of soybean oil and 1 to 4% by weight of a fatty acid methyl ester to the mixture into which the gelling agent is added, cooling the mixture to 135 to 145 ° C, and Injecting 0.1 to 5% by weight of butylated hydroxy toluene to the cooled mixture.

The ink composition according to an embodiment of the present invention, the vehicle composition 40 to 80% by weight, pigment 10 to 30% by weight, inorganic filler 2 to 10% by weight, 0.05 to 3% by weight desiccant and 5 to 20% by weight fatty acid ester Include.

According to one embodiment, the ink composition further comprises at least one additive selected from a sizer, an emulsion stabilizer, a wax and a hydrophilic antioxidant.

According to one embodiment, the size adjusting agent comprises starch.

According to one embodiment, the wax comprises a PTFE-based wax.

According to one embodiment, the hydrophilic antioxidant comprises at least one selected from the group consisting of hydroquinone (HQ) and tetrahydroxy-1,4-quinone (THQ).

According to one embodiment, the desiccant includes a manganese-based desiccant, and does not include a cobalt-based desiccant.

According to the vehicle composition and the ink composition according to the embodiment of the present invention configured as described above, it is possible to prevent and / or reduce odor generated during ink drying, and to have a fast drying speed and a backing prevention performance suitable for high speed printing. have.

In addition, the ink composition may be used as an environmentally friendly ink by minimizing the content of a metal desiccant, hydroquinone, and the like, without using harmful heavy metals such as volatile solvents and cobalt.

Hereinafter, a vehicle composition according to an embodiment of the present invention, an ink composition including the same, and a method of preparing the same will be described in detail.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Environmentally Friendly Vehicle Compositions and Methods of Making Vehicle Compositions

The vehicle composition according to an embodiment of the present invention includes a rosin-modified phenolic resin, soybean oil, fatty acid ester, gelling agent and lipophilic antioxidant.

For example, the vehicle composition may include 30 to 60% by weight of rosin-modified phenolic resin, 15 to 40% by weight of soybean oil, 20 to 40% by weight of fatty acid ester, 0.1 to 2% by weight of gelling agent and 0.1 to 5% by weight of lipophilic antioxidant. May contain%.

The rosin modified phenolic resin has a solid phase, and in the process of preparing the vehicle composition, is dissolved by heating together with the soybean oil and the fatty acid ester, and may be gelled using a gelling agent such as aluminum chelate.

The rosin-modified phenolic resin has a weight average molecular weight in the range of 80,000 to 140,000, a softening point in the range of 150 to 185 ° C, an acid value of 15 to 20 mgKOH / g, a Gardner viscosity of S to V, and n-heptane dilution. It may range from 10-16.

When the weight average molecular weight of the rosin-modified phenolic resin is less than 80,000, when applied to an ink composition, the penetration drying property may be lowered and a drying delay may appear. In addition, when the weight average molecular weight exceeds 140,000, the fluidity of the ink rapidly becomes undesired, which may cause a decrease in the transferability. Therefore, the weight average molecular weight of the rosin-modified phenol resin is preferably about 80,000 to 140,000.

When the softening point of the rosin-modified phenolic resin is less than 150 ° C., sagging due to heat becomes severe, color density, gloss, etc. may become uneven during printing, and ink splashing, drying delay, and the like may occur. In addition, when the softening point exceeds 185 ° C, the change over time of the ink is severe, and the storage stability may be lowered. Therefore, it is preferable that the softening point of the said rosin modified phenol resin exists in the range of 150 degreeC-185 degreeC.

For example, the rosin may be at least one of gum rosin, thalrose and wood rosin. These can be used individually or in mixture.

For example, the rosin-modified phenolic resin may be prepared by reacting rosin, polyhydric alcohol, phenolic compound and paraformaldehyde. Specifically, the rosin-modified phenolic resin may be prepared by reacting an intermediate obtained by esterification of rosin with a polyhydric alcohol with a phenol compound and paraformaldehyde. If necessary, a mixture of the rosin and petroleum resin may be used to shorten the set drying time and increase the emulsification suitability by increasing the molecular weight and solubility of the rosin modified phenolic resin.

The soybean oil (soybean oil) has a lower iodine value than other vegetable oils such as linseed oil. When the iodine value of the vegetable oil is high, the content of linoleic acid and the like is high, which may cause ink odor by reacting with a metallic desiccant to release an aldehyde or alkane gas. In the present invention, odor generation of the ink can be suppressed by using soybean oil having a relatively low iodine value. For example, the soybean oil may have an iodine value in the range of 125 to 140 and a saponification value in the range of 180 to 200.

The fatty acid ester can adjust the viscosity of the vehicle composition and the ink composition in a small amount compared to the vegetable oil. Thus, it is possible to increase the resin or vehicle content relatively, thus improving the drying rate.

For example, the fatty acid ester may be obtained by transesterifying vegetable oil with mono alcohol, or may be obtained by directly esterifying fatty acids of vegetable oil with mono alcohol. For example, the mono alcohol may include methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, and the like. Preferably, as the fatty acid ester, fatty acid methyl ester may be used.

The gelling agent may be any one of chelated alkoxides, alkoxides, and aluminum chelates as a component used for increasing the molecular weight of the vehicle composition and adjusting the viscoelasticity of the ink. Specific examples thereof include aluminum sec-butoxide (ASB), aluminum di-isopropoxide acetoacetic ester chelate (AIE-M), and oxyaluminum octoate (AOA).

When the content of the gelling agent is less than 0.1% by weight, the elasticity of the ink may be poor, and when the content of the gelling agent is higher than 2% by weight, the viscosity may be poor. Therefore, the content of the gelling agent is preferably 0.1 to 2% by weight.

The lipophilic antioxidant can prevent the oxidation of the vegetable oil, thereby preventing the occurrence of ink odor. In addition, since the lipophilic antioxidant is lipophilic, the ink does not escape even if it comes into contact with water in the printing process, and remains in the printing layer to maintain the odor prevention effect. For example, the lipophilic antioxidant may comprise butylated hydroxy toluene.

The vehicle composition may be obtained by mixing the rosin-modified phenolic resin, the soybean oil and the fatty acid ester.

According to one embodiment, first, 30 to 60% by weight of the rosin-modified phenol resin, 8 to 12% by weight of soybean oil and 8 to 12% by weight of fatty acid methyl ester are mixed and heated at 180 to 200 ° C. In this process, the rosin-modified phenolic resin may be dissolved, and binding and reaction of the resin, soybean oil and fatty acid methyl ester may occur. For example, the heating time may be 0.5 to 3 hours.

Next, 8 to 12% by weight of soybean oil and 14 to 18% by weight of fatty acid methyl ester are added thereto, and the mixture is cooled to 145 to 155 ° C.

Next, it heats up at 155-165 degreeC, and adds 0.1-2 weight% of gelling agents. For example, the temperature may be maintained for 0.5 to 3 hours.

Next, 2 to 5% by weight of soybean oil and 1 to 4% by weight of fatty acid methyl ester are added thereto, and the mixture is cooled to 135 to 145 ° C.

Next, 0.1 to 5% by weight of the lipophilic antioxidant is added.

The content of each component in the above is based on the total weight of the vehicle composition obtained, may be expressed in parts by weight.

Through the above-described procedures and temperature control, a vehicle composition having appropriate printability (penetration testability, flowability, etc.) and capable of preventing solvent separation and off-flavor can be obtained. In particular, when the primary heating temperature exceeds 200 ℃, the viscosity of the vehicle composition may be lowered, if less than 180 ℃, penetration drying may be lowered to cause a drying delay.

Vehicle composition according to an embodiment of the present invention, by inhibiting the oxidation of the vegetable oil component and improves the penetration drying, it is possible to prevent the occurrence of odor during ink printing.

Eco-friendly ink composition

An ink composition according to an embodiment of the present invention may include a vehicle composition, a pigment, an inorganic filler, a desiccant, and a fatty acid ester. The ink composition may further include at least one additive selected from a sizer, an emulsion stabilizer, a wax, and a hydrophilic antioxidant, as necessary.

For example, the ink composition may include 40 to 80 wt% of the vehicle composition, 10 to 30 wt% of the pigment, 2 to 10 wt% of the inorganic filler, 0.05 to 3 wt% of the desiccant, and 5 to 20 wt% of the fatty acid ester. have.

For example, the ink composition further comprises 0.5 to 3% by weight of the size adjuster, 0.1 to 2% by weight of the emulsion stabilizer, 0.1 to 5% by weight of the wax, 0.01 to 0.5% by weight of the desiccant and 0.1 to 5% by weight of the hydrophilic antioxidant can do.

The vehicle composition may be substantially the same as the vehicle composition according to one embodiment of the present invention described above. When the vehicle composition is less than 40% by weight, the drying rate may be lowered, and when it exceeds 80% by weight, the viscosity may be excessively increased and the transition may be poor.

As the pigment, various kinds of organic or inorganic pigments used in general oil inks may be used, for example, C. Pigment Yellow 12 (PANAX YELLOW GF-932), C. Eye Pig CI Pigment Red 57: 1 (PANAX CARMINE 10BK-B (T)), C.I Pigment Blue 15: 3 (PANAX BLUE BS-7030), carbon black (Korea carbon black, NEROX 505), C. Pigment Red (CI Pigment Red) 53: 1 (Panax Red 307DI), C. Pigment Green (CI Pigment Green) 7 (PHTHALO COLORS, PIGMENT GREEN 7 PCB FREE), C.I Examples include CI Pigment Violet 3 (HANGZHOU, SHANGDAMENT FAST VIOLET NO. 3), and the like. However, various pigments may be selectively used depending on the color, and may be used alone or in combination, as necessary.

When the content of the pigment is less than 10% by weight, it may cause printing defects due to problems such as lowering of ink concentration, excessive amount of emulsification, and excessive flow, and when exceeding 30% by weight, fluidity of the ink is lowered and emulsification. Print quality may be degraded due to problems such as a decrease in quantity, a poor ink transfer power, and the like.

The inorganic filler serves to assist the penetration drying. For example, the inorganic filler may include calcium carbonate, silica, and the like, and the particle size may be 1 μm or less.

The desiccant facilitates oxidative drying by promoting oxidative polymerization with oil. For example, the desiccant may include salts of iron, cobalt, manganese, zinc, zirconium, titanium or calcium. Among these, in the case of the cobalt-based desiccant, regulations on use as harmful substances are gradually strengthened, and therefore, the desiccant may exclude the cobalt-based desiccant. According to one embodiment, the desiccant may include a manganese-based desiccant such as manganese naphthenate, manganese octoate and the like. When using the manganese-based drying agent, it is preferable that the manganese content is used less than 300ppm.

The fatty acid ester may be the same as described above, and may serve to adjust the viscosity of the ink. The fatty acid ester can adjust the viscosity in a relatively small amount, it is possible to reduce the vegetable oil components that cause off-flavor. In addition, it is faster to penetrate and dry than vegetable oil, and has high water resistance and resin solubility.

For example, the size adjusting agent may include starch. The particle size of the size adjusting agent may be larger than the ink printing layer thickness, for example, may be 20 to 30㎛. Thus, the size adjuster serves as a spacer for generating voids between the prints, thereby preventing sticking and backing of the prints. The ink composition of the present invention is for low odor inks, and preferably contains an excess amount of size control agent than conventional inks.

The emulsion stabilizer is to stabilize the dispersion of the ink, and those known in the art may be used.

The wax may improve the slip resistance and abrasion resistance of the ink, polytetrafluoroethylene (PTFE) -based wax, polyethylene (PE) -based wax and the like can be used, preferably PTFE-based wax may be used. PTFE-based wax has a higher hardness than PE-based wax, and it is preferable to apply it to a low odor ink design to prevent backing due to its excellent slip property.

The hydrophilic antioxidant can be used in small amounts for the oxidation inhibition and storage stability of the ink. For example, the hydrophilic antioxidant may include hydroquinone (HQ), tetrahydroxy-1,4-quinone (THQ) and the like.

The ink composition according to the present invention can prevent and / or reduce odor that occurs when ink is dried, and can have a fast drying speed and a backing prevention performance suitable for high speed printing.

In addition, the ink composition may be used as an environmentally friendly ink by minimizing the content of a metal desiccant, hydroquinone, and the like, without using harmful heavy metals such as volatile solvents and cobalt.

The ink composition according to the present invention may be used for offset printing, but is not limited thereto, and may be used for various printing methods applicable.

Hereinafter, the preparation and effects of the vehicle composition and the ink composition of the present invention will be described through specific examples, comparative examples, and experiments.

Preparation of Vehicle Composition

<Example 1>

In a pressurized kettle equipped with a thermometer, a condenser, a stirrer, and a water separator, 46% by weight of rosin-modified phenolic resin (LATON, LA-795), 10% by weight of soybean oil, and 10% by weight of fatty acid methyl ester were mixed under a nitrogen atmosphere, and the temperature was increased to 190 ° C. After raising, the mixture was kept for 1 hour to sufficiently dissolve and mix the mixture. Next, 10% by weight of soybean oil and 16% by weight of fatty acid methyl ester were added thereto and cooled to 150 ° C. Next, it heated up at 160 degreeC, and after adding 0.75 weight% of aluminum chelates as a gelling agent, it hold | maintained about 1 hour. Next, 3.5% by weight of soybean oil and 2.25% by weight of fatty acid methyl ester were added thereto, cooled to 140 ° C, and maintained for 30 minutes. Next, 1.5 wt% of butylated hydroxy toluene was added to prepare a vehicle composition.

Comparative Example 1

In a pressurized kettle equipped with a thermometer, a condenser, a stirrer, and a water separator, 39% by weight of rosin-modified phenolic resin and 20% by weight of soybean oil were mixed in a nitrogen atmosphere, and the temperature was raised to 190 ° C. Mixed. Next, 34 wt% of soybean oil was added thereto and cooled to 150 ° C. Next, it heated up at 160 degreeC, and after adding 0.5 weight% of aluminum chelates as a gelling agent, it hold | maintained about 1 hour. Next, 6.5 wt% of soybean oil was added thereto, cooled to 140 ° C, and maintained for 30 minutes to prepare a vehicle composition.

Comparative Example 2

In a pressurized kettle equipped with a thermometer, a condenser, a stirrer, and a water separator, 39% by weight of rosin-modified phenolic resin and 20% by weight of linseed oil were mixed in a nitrogen atmosphere, and the temperature was raised to 190 ° C., and then maintained for 1 hour. The mixture was sufficiently dissolved and mixed. Next, 34 wt% of linseed oil was added thereto and cooled to 150 ° C. Next, it heated up at 160 degreeC, and after adding 0.5 weight% of aluminum chelates as a gelling agent, it hold | maintained about 1 hour. Next, 6.5 wt% of soybean oil was added thereto, cooled to 140 ° C, and maintained for 30 minutes to prepare a vehicle composition.

Comparative Example 3

In a pressurized kettle equipped with a thermometer, a condenser, a stirrer, and a water separator, 46% by weight of rosin-modified phenolic resin, 10% by weight of soybean oil, and 10% by weight of fatty acid methyl ester were mixed under a nitrogen atmosphere, and the temperature was raised to 190 ° C. Keep sufficiently to dissolve and mix the mixture. Next, 10% by weight of soybean oil and 16% by weight of fatty acid methyl ester were added thereto and cooled to 150 ° C. Next, it heated up at 160 degreeC, and after adding 0.75 weight% of aluminum chelates as a gelling agent, it hold | maintained about 1 hour. Next, 3.0% by weight of soybean oil and 4.25% by weight of fatty acid methyl ester were added thereto, cooled to 140 ° C, and maintained for 30 minutes to prepare a vehicle composition.

<Comparative Example 4>

In a pressurized kettle equipped with a thermometer, a condenser, a stirrer, and a water separator, 47.5% by weight of rosin-modified phenolic resin, 10% by weight of soybean oil, and 10% by weight of fatty acid methyl ester were mixed under a nitrogen atmosphere, and the temperature was raised to 220 ° C. Keep sufficiently to dissolve and mix the mixture. Next, 10% by weight of soybean oil and 14% by weight of fatty acid methyl ester were added thereto and cooled to 150 ° C. Next, it heated up at 160 degreeC, and after adding 0.75 weight% of aluminum chelates as a gelling agent, it hold | maintained about 1 hour. Next, 3.5% by weight of soybean oil and 2.75% by weight of fatty acid methyl ester were added thereto, cooled to 140 ° C, and maintained for 30 minutes. Next, 1.5 wt% of butylated hydroxy toluene was added to prepare a vehicle composition.

The vehicle composition prepared in Example 1 and Comparative Examples 1 to 4 was evaluated in odor, set drying time, Flow 10/60 minutes (mm), high-speed printing aptitude is shown in Table 1 below.

Odor was performed by dividing the device evaluation and sensory evaluation. The device evaluation was carried out by measuring the volatile substances causing odor with MiniRAE3000 (RAE SYSTEM), and the sensory evaluation was performed from 1 (bad) to 10 (good) through 10 acceptance tests. Numerical on the scale.

The set drying time measured the penetration dryness of the ink.

Table 1

Referring to Table 1, it can be seen that the vehicle composition of Example 1, Comparative Example 3 and Comparative Example 4 using the fatty acid methyl ester has excellent penetration drying performance. In addition, when comparing Comparative Example 1 with Comparative Example 2, it can be seen that the use of soybean oil with a relatively low iodine value is advantageous for reducing the odor. In addition, comparing Example 1 with Comparative Example 3, it can be seen that the addition of butylated hydroxy toluene can greatly reduce the odor. In addition, when comparing Example 1 and Comparative Example 4, it can be seen that the high-speed printing aptitude and the penetration drying properties vary depending on the cooking temperature when the vehicle composition is prepared. In addition, referring to the Flow 10/60 minute value, it can be seen that when the cooking temperature is 220 ° C., the elasticity is excessively increased to lower the leveling property of the ink and the gloss.

Preparation of Ink Composition

<Example 2>

19 wt% of the pigment, 60 wt% of the vehicle composition prepared in Example 1, and 7 wt% of calcium carbonate were added thereto, followed by dispersion to prepare an ink base. Starch 1% by weight, emulsion stabilizer (LAWTER, OPTILITH 500) 0.3% by weight, PTFE-based wax (SHAMROCK, FS-966 (C)) 2.0% by weight, manganese desiccant (10% concentration) in the ink base dispersed (jinyang Hwaseong, 10% MN-NAPHTHENATE (manganese)) 0.2% by weight, THQ 2.0% by weight was added and mixed. Next, to adjust the viscosity, 8.5 wt% of fatty acid methyl ester was added and mixed to prepare an ink composition.

Comparative Example 5

After the 19 wt% of the pigment, 56 wt% of the vehicle composition prepared in Comparative Example 1 and 5 wt% of calcium carbonate were added thereto, dispersion was performed to prepare an ink base. 0.3 wt% starch, 0.3 wt% emulsion stabilizer, 0.5 wt% PTFE wax, 1.0 wt% PE wax, 0.5 wt% manganese desiccant (10% concentration), cobalt desiccant (10% concentration) in the dispersed ink base ) 1.0% by weight, THQ 0.7% by weight was added and mixed. Next, 15.7% by weight of soybean oil was added and mixed for viscosity control to prepare an ink composition.

Comparative Example 6

19 wt% of the pigment, 60 wt% of the vehicle composition prepared in Example 1, and 7 wt% of calcium carbonate were added thereto, followed by dispersion to prepare an ink base. 1% by weight of starch, 0.3% by weight of emulsion stabilizer, 2.0% by weight of PE wax, 0.2% by weight of manganese desiccant (10% concentration), and 2.0% by weight of THQ were added to the dispersed ink base. Next, to adjust the viscosity, 8.5 wt% of fatty acid methyl ester was added and mixed to prepare an ink composition.

Comparative Example 7

19 wt% of the pigment, 60 wt% of the vehicle composition prepared in Example 1, and 7 wt% of calcium carbonate were added thereto, followed by dispersion to prepare an ink base. 0.3 wt% of the emulsion stabilizer, 2.0 wt% of the PTFE wax, 0.2 wt% of the manganese desiccant (10% concentration), and 2.0 wt% of the THQ were added and mixed into the dispersed ink base. Next, 9.5% by weight of fatty acid methyl ester was added and mixed for viscosity control to prepare an ink composition.

The ink compositions prepared in Examples 2 and Comparative Examples 5-7 were evaluated for odor, set drying time, Flow 10/60 minutes (mm), frictional force, and set off (back off) characteristics, and are shown in Table 2 below. It was.

The frictional force was measured by the friction tester of TOYOSEIK after fabrication of printed specimens, and the set off characteristics were quantified on the scale of 1 (bad) to 10 (good) on the white paper part opposite to the printing surface during printing.

TABLE 2

Referring to Table 2, it can be seen that the ink composition of Example 2 is superior in penetration drying property, odor, slip property, and backing property as compared to Comparative Example 5 (conventional non-eco-friendly ink). In addition, when comparing Example 2 with Comparative Example 6, it can be seen that the use of PTFE-based wax is preferable for improving the slip properties (when the frictional force is large, scratch resistance may be reduced). In addition, comparing Example 2 with Comparative Example 7, it can be seen that the backing can be greatly improved by the use of the size adjuster. In addition, referring to the Flow 10/60 minute value, it can be seen that in Comparative Example 5, the elasticity is excessively increased, so that the leveling property of the ink may be lowered and the gloss may be lowered.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

The vehicle composition and the ink composition according to the present invention have environmental friendliness, and can be effectively used for food packaging, children's toy packaging / printed materials, and the like.

Claims (13)

30 to 60 wt% rosin modified phenolic resin;
Soybean oil 15 to 40% by weight;
Fatty acid ester 20 to 40% by weight;
0.1 to 2 wt% gelling agent; And
A vehicle composition comprising 1.5 to 5% by weight of lipophilic antioxidant. The rosin-modified phenolic resin according to claim 1, wherein the rosin-modified phenol resin has a weight average molecular weight of 80,000 to 140,000, a softening point of 150 to 185 ° C, an acid value of 15 to 20 mgKOH / g, and a Gardner viscosity of S to V. and n-heptane dilution is in the range of 10-16. The vehicle composition of claim 1, wherein the fatty acid ester comprises a fatty acid methyl ester. The vehicle composition of claim 1, wherein the gelling agent comprises at least one selected from the group consisting of chelate alkoxides, alkoxides and aluminum chelates. The vehicle composition of claim 1, wherein the lipophilic antioxidant comprises butylated hydroxy toluene. Mixing rosin-modified phenolic resin 30 to 57% by weight, soybean oil 8 to 12% by weight and fatty acid methyl ester 8 to 12% by weight and heating at 180 to 200 ℃;
Adding 8-12% by weight of soybean oil and 14-18% by weight of fatty acid methyl ester to the heated mixture, and cooling the mixture to 145-155 ° C;
Heating the cooled mixture to 155 to 165 ° C., adding 0.1 to 2 wt% of a gelling agent;
Adding 2 to 5 wt% of soybean oil and 1 to 4 wt% of fatty acid methyl ester to the mixture into which the gelling agent was added, and cooling the mixture to 135 to 145 ° C .; And
Method for producing a vehicle composition comprising the step of adding 1.5 to 5% by weight of butylated hydroxy toluene to the cooled mixture. 40 to 80% by weight of any one vehicle composition selected from claims 1 to 5;
Pigments 10-30 wt%;
2 to 10 weight percent of an inorganic filler;
0.05 to 3 weight percent of a desiccant; And
An ink composition comprising 5 to 20% by weight fatty acid ester. 8. The ink composition of claim 7, further comprising at least one additive selected from sizers, emulsion stabilizers, waxes, and hydrophilic antioxidants. The ink composition of claim 8, wherein the size adjusting agent comprises starch. The ink composition of claim 8, wherein the wax comprises a PTFE wax. The ink composition of claim 8, wherein the hydrophilic antioxidant comprises at least one selected from the group consisting of hydroquinone (HQ) and tetrahydroxy-1,4-quinone (THQ). The method of claim 7, further comprising 0.5 to 3% by weight of the size adjuster, 0.1 to 2% by weight of the emulsion stabilizer, 0.1 to 5% by weight of the wax, 0.01 to 0.5% by weight of the desiccant and 0.1 to 5% by weight of the hydrophilic antioxidant An ink composition. The ink composition of claim 7, wherein the desiccant comprises a manganese desiccant and does not include a cobalt desiccant.